Python / Dictionary / List / Mongo插入问题 – 初学者

2024年2月3日 186次阅读

对不起,试着理解并习惯了字典和列表对象.

我通过他们的ebaysdk调用eBay的API,并希望将其中的项目存储为Mongo中的文档.简单.

以下是将返回的架构示例：

<timestamp>2009-09-04T00:47:12.456Z</timestamp>
  <searchResult count="2">
  <item>
     <itemId>230371938681</itemId>
     <title>Harry Potter and the Order of the Phoenix HD-DVD</title>
     <globalId>EBAY-US</globalId>
     <primaryCategory>
        <categoryId>617</categoryId>
        <categoryName>DVD, HD DVD & Blu-ray</categoryName>
     </primaryCategory>

我已经尝试了500次这段代码的迭代,这是我最基本的东西.

from ebaysdk import finding
from pymongo import MongoClient

api = finding(appid="billy-40d0a7e49d87")
api.execute('findItemsByKeywords', {'keywords': 'potter'})
listings = api.response_dict()

client = MongoClient('mongodb://user:pass@billy.mongohq.com:10099/ebaystuff')
db = client['ebaycollection']
ebay_collection = db.ebaysearch

for key in listings:
  print key
  ebay_collection.insert(key)

会得到这个错误：

Traceback (most recent call last):
  File "ebay_search.py", line 34, in <module>
    ebay_collection.insert(key)
  File "/Library/Python/2.7/site-packages/pymongo/collection.py", line 408, in insert
    self.uuid_subtype, client)
  File "/Library/Python/2.7/site-packages/pymongo/collection.py", line 378, in gen
    doc['_id'] = ObjectId()
TypeError: 'str' object does not support item assignment

简单的东西.我想要做的就是将每个项目添加为文档.

最佳答案 像字符串这样的不可变类型不能用作文档,因为它不允许添加其他字段,例如
_id field Mongo requires.您可以将字符串包装在字典中以用作包装文档：

key_doc = {'key': key}
ebay_collection.insert(key_doc)
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